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catalytic converter

  1. Running Catless

    Naturally Aspirated (NA)
    Last week i put on my 4-2-1 DC header bolted on to a greddy TI-c catback which has like a 10inch resonator welded in it. The setup is way too loud for anyone's taste and so raspy from about 2800 to 4200 rpms. From what I've read on the forum, my best move would be too add a cat in the stock...
  2. QR25DE New Magnaflow Catalytic Convertor- Model # 51013

    Parts for Sale
    I have a brand new magnaflow catalytic convertor still in factory packaging. Part# 51013 is an OBDII compliant universal stainless steel cat with 2.25" I/O diameter. Need $75 plus shipping. Thanks.
  3. B15 ser header?

    Introductions
    Hey guys, joined this because of my new 06 sentra ser that i recently bought. wanting to do some exhaust work, but im lost on if its legal or not to an a header w/o cat. there is the second cat after the down pipe but im not for sure if thats good enough to pass inspection. can someone help?
  4. Catalytic Converter 02 SE-R, Do i need it? read on...

    Troubleshooting and Support
    ok so I was out on Okeechobee road racing when all of a sudden I hear a pop and then my engine sounded like there was a paper bag stuck in the engine. So im like WDF. SO i stop and put it on the idk whats it called at this time but the thing u used to change a tire...and i didn't see nothing...
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